gregorian chant gregorian calendar month • gregorian mode · · · Info · Definitions · Synonyms · Characters · · gregorian chant · · Text Common · · Latin · · Scripts 15 · · Length 5 · · Syllables Definitions · · · (noun) a liturgical chant of the Roman Catholic Church. Synonyms: plainsong, plainchant, Gregorian chant. · · Noun Definition 1 Synonyms · · · plainsong · · Synonym 1 plainchant · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074